According to an Oregon study, which of the following chemicals exceeded IDLH levels?

In the context of the Oregon study regarding chemicals that exceeded Immediately Dangerous to Life or Health (IDLH) levels, nitrogen dioxide is recognized for its significant health hazards, especially in high concentrations. As a toxic gas, it can irritate the respiratory system and has the potential to cause severe health effects, including pulmonary edema and even death, depending on exposure levels.

Nitrogen dioxide's IDLH value is established based on acute exposure scenarios where the gas can lead to immediate harm or serious health consequences. The study likely found that nitrogen dioxide concentrations in certain environments were above this threshold, highlighting the need for stringent monitoring and protective measures in situations where this gas may be present.

The other chemicals listed, such as ozone, carbon dioxide, and xenon, while potentially hazardous in specific contexts, do not exhibit the same immediate health risks associated with nitrogen dioxide at the levels mentioned in the study. Ozone, for example, is harmful at elevated levels, but its IDLH threshold is different. Carbon dioxide is primarily a asphyxiant at very high concentrations, and xenon is typically not associated with an IDLH designation in occupational settings. Thus, nitrogen dioxide stands out as the chemical of concern in this context, clearly exceeding IDLH levels in the findings of